NullPointerException at @EJB Component

Question

My code:

@Path("/actors")
public class MainController {

  @EJB
  private ActorDaoLocal actorDao;  

}

@Local
public interface ActorDaoLocal { 
  //some stuff here
}

@Stateless
public class ActorDao implements ActorDaoLocal {

  @PersistenceContext
  private EntityManager em ; 
  //some stuff here 
}

@ManagedBean(name = "ActorBean")
@ApplicationScoped
public class ActorBean {

  @EJB
  private ActorDaoLocal usersDao;
}

When I am trying to use actorDao in MainController class, it is null. Why and how to fix it? I also tried to use ActorBean object, but it's also null.

@soong - It's not commont NullPointerException, but problem realated with EJB Injection. — Araneo, Feb 09 '16 at 23:42
@aribeiro - Maven-compiler-plugin, maven-war-plugin and Tomcat as server — Araneo, Feb 09 '16 at 23:45
Well Tomcat is not an application server. see http://stackoverflow.com/questions/4304757/how-to-deploy-ejb-based-application-on-tomcat — user140547, Feb 10 '16 at 00:00

score 1 · Accepted Answer · answered Feb 10 '16 at 08:27

1

Tomcat isn't an application server but instead a servlet container. You should use TomEE instead.

answered Feb 10 '16 at 08:27

António Ribeiro

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I've changed Tomcat to Glassfish and it's working. Thanks :) – Araneo Feb 10 '16 at 08:50

NullPointerException at @EJB Component

1 Answers1